Frank Callaghan

Endocardial Solutions, Inc. designs, develops and manufactures a minimally invasive diagnostic system that diagnoses within the span of a few heartbeats, arrhythmia, a potentially fatal abnormal heart rhythm. The company's EnSite catheters and clinical workstations produce a high-resolution, real-time, three-dimensional color display of electrical activity in the heart chamber, thus allowing electrophysiologists to locate and diagnose tachycardia in real-time and to determine the course of treatment. It was founded in 1992. The company is located in St. Paul, MN.

AGA Medical Holdings, Inc. operates as a holding company for manufacturers of medical devices for the treatment of heart defects and vascular diseases. The companies AGA Medical Holdings operates sell devices, which are used by pediatric cardiologists, radiologists, and vascular surgeons. The company was founded in July 2005 and is headquartered in Plymouth, MN.

St. Jude Medical LLC develops, manufactures and distributes cardiovascular medical devices for the global cardiac rhythm management, cardiovascular and atrial fibrillation therapy areas and neurostimulation medical devices for the management of chronic pain. The company was founded by Manuel A. Villafana in 1976 and is headquartered in St. Paul, MN.